Capstan



\ (N0 Model.) m J. B. SAMPLE. GAPSTAN.

N0. 605,346. Patented June 7,1898.

m2 NoRms FEYERS co. PHOTOLITHQ. wasmmsnm. DV 0 ilwiTnn STATES JAMES BEARD SAMPLE, OF COLUMBUS, GEORGIA.

CAPSTAN.

SPECIFICATION formingpart of Letters Patent No. 605,346, dated June 7,1898.

Application filed January 27, 1898. Serial No. 668,154. (No model.) i

To all whdm it may concern.- I

Be it known that I, JAMEs BEARD SAMPLE, a citizen of the United States, residing at Golumbus, in the county of Muscogee and State of Georgia, have invented certain new and useful Improvements in Oapstans; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improvement in capstans; and it is embodied in the 0011- struction and arrangement of parts hereinafter described, and defined in the claims.

The aim and purpose of the invention is the provision of an improved machine designed for moving heavy bodies andmaohinery and for lifting and elevating purposes.

\Vhile I have shown in the accompanying drawings an embodiment of the invention, I desire it understood that the same is shown for the purpose of explanation and not for limitation, as many changes can be made without departing from the nature and principle of the invention.

In the drawings like letters of reference designate corresponding parts in both views.

Figure 1 is a top plan View of the machine. Fig. 2 is a side elevation showing parts in section.

In the drawings, A represents the base of the frame, on which is supported a step-box B.

G designates the side bars of the frame, which are conveniently placed, and D designates the top bar.

Loosely journaled in the step-box B is a vertical shaft E, extending up and having its upper end journaled in the bearing in the bar D. This shaft is provided on its lower end with a drum or pulley F of any convenient size or form. Fixedly secured tothe vertical,

shaft and extending out therefrom in opposite directions are the sweeps or levers G, conveniently in pairs, diverging from the shaft. The outer ends of each pair of these levers are united bya platform a, on which is mounted a motor K. These motors I have shown to be of the electric type; but I desire it understood that any convenient form of motor can be employed.

Dependent from the platforms at are the supporting-standards 7r ,which are preferably constructed to serve as additional braces for the two members of the sweeps. In the lower ends of the standards are journaled the axles of driving-wheels L, 011 the shafts of each of which are secured the sprocket-wheels Z.

' M is a driving-belt, conveniently of the link type, which connects the sprocket-wheel Z with the sprocket-wheel Z on the motor-shaft.

N designates a circular track or way supported on posts 11 and located below the wheel L, and on which the latter travels. I have shown in the drawings this track as having a smooth surface; but I desire it understood that the surface of the track may have projections thereon or be of the rack type and that the wheel may be made with its periphery to correspond.

0 Of designate the feed-wires, the same terminated in suitable brushes 0, located at the center of the machine and conveniently below the upper bar. On the vertical shaft are secured the collector-rings 0, with which the brushes engage, and from these rings the wires arecarried outward along the sweeps to the respective motors.

The gearing for the respective motors and driving-wheels is so fashioned and adjusted that a powerful leverage can be had and the driving-wheels made to travel at a very rapid rate of speed.

In'operation, a current of electricity being supplied to the motors, the driving-wheels are driven by the latter and rapidly travel around the track. The power being applied to the outer ends of the sweeps will give an extended and very powerful leverage, and the rapidity with which the motors will drive the sweeps will be such that when a cable, belt, or cord is attached to the pulley or drum it will be rapidly wound thereon, and owing to the long leverage very heavy bodies can be moved with but little trouble.

As above stated, I have shown 1nyinvention in what may be considered its simplest form; but I desire it understood that the invention is not limited to the construction shown and described, as it is apparent that many minor changes can be made and other types of motors used while still retaining the nature and principle of the invention.

Having thus described the invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a capstan, the combination with the supporting frame, of an upright shaft, sweeps connected to the shaft, a motor carried by the outer end of each of the sweeps, means for supplying the motors with motive power, drive-wheels driven by the motors and a track on which the wheels move, substantially as described.

2. In .a capstan, the combination with a frame, of a vertical shaft loosely mounted therein, sweeps connected to the shaft and extending in opposite directions therefrom, platforms on the outer ends of the sweeps, a motor mounted on each of the platforms, a drive-wheel secured below each platform and having driving connections with the motor thereon and a circular track on which the drive wheels move, substantially as described.

3. The combination with a frame, of a vertical shaft mounted therein, a sweep fixedly secured to the shaft and extending outwardly therefrom, a motor on the outer end of the sweep, means for supplying the motor with motive power, a drive-Wheel carried by the outer end of the sweep and having a gear connection with the motor, a circular track on which the wheel moves and a drum on the shaft.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES BEARD SAMPLE. Vitnesses:

J. B. IIUFF, W. O. MARTINIEVE. 

